<template>
  <div class="login_container">
    <div class="login_box">
      <!-- 头像区域 -->
      <div class="avatar_box">
        <img src="../assets/logo.png" />
      </div>
      <!-- 登陆表单区域 -->
      <el-form ref="loginFomRef" :model="loginForm" :rules="loginFormRules" class="login_form" label-width="0px">
        <!-- 用户名 -->
        <el-form-item prop="username">
          <el-input v-model="loginForm.username" prefix-icon="el-icon-user-solid"></el-input>
        </el-form-item>
        <!-- 密码 -->
        <el-form-item prop="password">
          <el-input type="password" v-model="loginForm.password" prefix-icon="iconfont iconmima"></el-input>
        </el-form-item>
        <!-- 按钮 -->
        <el-form-item class="btns">
          <el-button type="primary" @click="login">登录</el-button>
          <el-button type="info" @click="restLoginForm">重置</el-button>
        </el-form-item>
      </el-form>
    </div>
  </div>
</template>
<script>
export default {
  data () {
    return {
      // 这是登录的表单数据绑定对象
      loginForm: {
        username: 'admin',
        password: '123456'
      },
      // 这是表单验证规则对象
      loginFormRules: {
        // 验证用户名是否合法
        username: [{
          required: true,
          message: '请输入登录名称',
          trigger: 'blur'
        },
        {
          min: 3,
          max: 5,
          message: '长度在 3 到 5 个字符',
          trigger: 'blur'
        }
        ],
        // 验证密码是否合法
        password: [{
          required: true,
          message: '请输入登录密码',
          trigger: 'blur'
        },
        {
          min: 6,
          max: 10,
          message: '长度在 6 到 10 个字符',
          trigger: 'blur'
        }
        ]
      }
    }
  },
  methods: {
    restLoginForm () {
      console.log(this)
      this.$refs.loginFomRef.resetFields()
    },
    login () {
      this.$refs.loginFomRef.validate(async valid => {
        if (!valid) return false
        const result = await this.$request.post('/login', this.loginForm)
        if (result.code !== 10000) {
          return this.$message.error(result.msg)
        } else {
          console.log(result)
          window.sessionStorage.setItem('token', result.token)
          this.$message.success(result.msg)
          // 编程式导航跳转到后台主页
          this.$router.push('/home')
        }
      })
    }
  }
}
</script>

<style lang="less" scoped>
  .login_container {
    background-color: #2b4b6b;
    height: 100%;
  }

  .login_box {
    width: 450px;
    height: 300px;
    background-color: #fff;
    border-radius: 3px;
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
  }

  .avatar_box {
    height: 130px;
    width: 130px;
    border: 1px solid #eee;
    border-radius: 50%;
    padding: 10px;
    box-shadow: 0 0 10px #ddd;
    position: absolute;
    left: 50%;
    background-color: #fff;
    transform: translate(-50%, -50%);

    img {
      width: 100%;
      height: 100%;
      border-radius: 50%;
      background-color: #eee;
    }
  }

  .btns {
    display: flex;
    justify-content: flex-end;
  }

  .login_form {
    position: absolute;
    bottom: 0;
    width: 100%;
    padding: 0 20px;
    box-sizing: border-box;
  }
</style>
